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GH FloraPro Liquids feeding schedule and calculator

General Hydroponics' official FloraPro Liquid feed program, scaled to the water you're mixing. A and B parts each get the amount shown.

Checked Oct 20, 2026 Source: General Hydroponics FloraPro Liquid Feed Program (USC, code 260611)
How to read a feeding chart Schematic of a 12 week feed chart. Each week shows the label dose as a dashed outline, a solid start at 50 percent, and a gold work-up band to 75 percent. Veg weeks 1 to 4, flower 5 to 11, flush week 12. FIG. 01 · READING A FEED CHART SCHEMATIC, NOT A BRAND CHART Label dose, and where to start LABEL 100% WORK UP 75% START 50% 01 02 03 04 05 06 07 08 09 10 11 H₂O 12 VEG · WK 1 TO 4 FLOWER · WK 5 TO 11 FLUSH
01

Mix calculator

Pick a week and how much you're mixing

Many growers here feed below the chart. Start low and raise it only if the plants want more.
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Turn on JavaScript to use the calculator, or read the full schedule below.
02

The full schedule

mL per gallon of water, at full strength

GH's chart: 1 propagation week, 3 veg weeks and 9 flower weeks.

Stage FloraPro Grow A FloraPro Grow B FloraPro Bloom A FloraPro Bloom B FloraPro PK+ FloraPro FUL+ TrueFlo EC
Propagation 7 7 3 1.4–1.6
Veg week 1 12 12 2 5 2.4–2.6
Veg week 2 12 12 2 5 2.4–2.6
Veg week 3 12 12 2 5 2.4–2.6
Flower week 1 14 14 2 2 5 2.6–2.8
Flower week 2 14 14 2 2 5 2.6–2.8
Flower week 3 14 14 2 2 5 2.6–2.8
Flower week 4 13 13 4 4 5 2.5–2.7
Flower week 5 13 13 4 4 5 2.5–2.7
Flower week 6 13 13 4 4 5 2.5–2.7
Flower week 7 8 8 5 4 5 1.8–2.0
Flower week 8 8 8 5 4 5 1.8–2.0
Flower week 9 (finish) 4 4 7 4 5–9 1.2–1.4

pH 5.5 to 6.2. GH: 5.5 to 5.8 in propagation, 5.6 to 6.1 in veg, 5.7 to 6.2 in flower (coco and rockwool).

03

Notes from the chart

  • Amounts are mL per US gallon. Grow A and B, and Bloom A and B, each get the amount shown.
  • Mix in the order listed: Grow or Bloom A, then B, then PK+, FUL+ and TrueFlo. GH recommends a mixing chamber between injections in automated systems.
  • TrueFlo runs at 5 to 9 mL in the finish week.
  • Feed chart provided as a recommendation only; results vary with your conditions and protocols (GH).

Source: General Hydroponics FloraPro Liquid Feed Program (USC, code 260611)

05

Threads worth reading

Discussions this page draws on

06

Go deeper

Learn guides on THCFarmer

07

Common questions

What are PK+, FUL+ and TrueFlo?

PK+ is GH's phosphorus and potassium booster for flower. FUL+ is a fulvic acid additive. TrueFlo is GH's line cleaner. All three are dosed alongside the A and B base on GH's chart.

Is FloraPro for home growers?

GH sells FloraPro as its commercial line and writes this chart for coco and rockwool with a mixing chamber between injections. It works in a hand-mixed reservoir too: add each part to the water and stir before the next.

Still not sure? Ask the growers.

Post your nutrients, how much you're feeding, your medium and a photo. Members who've run GH FloraPro Liquids will tell you what they'd change.

08

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09

More grow tools

These numbers are starting points, not rules. Strains, water, medium and light all change what a plant wants, so watch your plants and adjust.

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